If you haven't pulled the trigger, check out Leta's Top Shop in Arlington. She is the only one with all the factory patterns for Trophy, Bayliner, & Maxum. As long as she has your pattern, no measuring or boat visit required which saves big time over custom. She can take your order over the phone and ship for $15 or so. Order early and she may get it to you in a week or two. She will be slammed come March/April shipping orders all over the world.
I did a 26' complete Sunbrella canvas package, front/side windows, bimini w/ storage cover, and slant back for under $1500 (on my original frame). I had quotes up to $5000 for custom. It fit like a glove too.
You do have to install the canvas yourself including snaps. Took me about 4 hours to get it right. I'm very pleased...actually fit better than the factory vinyl.
Best of luck - RS
get quote/order online
http://www.letastopshop.com/